Home / 85,163,999.20-127,745,998.80-49,220,216.80

Finding the Fourth Proportional to 85,163,999.20, 127,745,998.80 and 49,220,216.80

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Solution

The fourth proportional to 85,163,999.20, 127,745,998.80 and 49,220,216.80 is: 73,830,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,163,999.20 : 127,745,998.80 = 49,220,216.80 : x
  2. Step 2: Convert to fraction form
    85,163,999.20/127,745,998.80 = 49,220,216.80/x
  3. Step 3: Cross multiply
    85,163,999.20x = 127,745,998.80 × 49,220,216.80
  4. Step 4: Simplify right side
    85,163,999.20x = 6,287,685,756,268,539
  5. Step 5: Solve for x
    x = 6,287,685,756,268,539/85,163,999.20
  6. Step 6: Final answer
    x = 73,830,325.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.